Question

Why where scientists critical of John Newlands Law Of Octaves?

Answer 1

Newland's Law of octave was not a good model for explaining properties of elements and relationships among them.

• Several known elements did not fit in the pattern.
• Elements were arranged in the order of increasing atomic mass.
• The arrangement was not applicable throughout, but till calcium only.
• Those elements discovered later did not follow law of octaves.
• Cobalt and Nickle were grouped with Fluorine and Chlorine, but difference in the properties were not explained.
• Iron being a metal was placed with oxygen and sulphur which are non-metal.